/* ===== 合作与联系 · 页面专属样式（作用域 .page-contact） ===== */

.page-contact{
  --pc-body: #C9CFC7;
  --pc-body-dim: #9AA398;
  --pc-ink-soft: #2C6B43;
  background: var(--night);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-contact img{
  max-width: 100%;
  display: block;
}

.page-contact .eyebrow{
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--pitch);
}

.page-contact .eyebrow--dark{
  color: var(--pc-ink-soft);
}

.page-contact .inline-link{
  color: var(--pitch);
  text-decoration: underline;
  text-decoration-color: rgba(53, 196, 106, .45);
  text-underline-offset: 3px;
}

.page-contact .inline-link:hover{
  text-decoration-color: var(--pitch);
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero{
  position: relative;
  padding: clamp(22px, 4vw, 40px) 0 clamp(34px, 5vw, 68px);
  border-bottom: var(--hair) solid var(--line);
  background:
    radial-gradient(120% 100% at 100% 0%, rgba(53, 196, 106, .10) 0%, rgba(53, 196, 106, 0) 55%),
    radial-gradient(90% 80% at 0% 100%, rgba(255, 106, 43, .08) 0%, rgba(255, 106, 43, 0) 60%),
    var(--night);
}

.page-contact .contact-hero__grid{
  display: grid;
  gap: clamp(24px, 3.5vw, 44px);
  margin-top: clamp(20px, 3vw, 34px);
}

.page-contact .contact-hero h1{
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2rem, 5.4vw, 3.9rem);
  line-height: 1.08;
  letter-spacing: .01em;
  max-width: 17ch;
}

.page-contact .contact-hero__lead{
  margin: 18px 0 0;
  max-width: 56ch;
  color: var(--pc-body);
  font-size: 1rem;
  line-height: 1.85;
}

.page-contact .contact-hero__facts{
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  border-top: var(--hair) solid var(--line);
}

.page-contact .contact-hero__facts li{
  display: grid;
  gap: 5px;
  padding: 14px 0;
  border-bottom: var(--hair) solid var(--line);
}

.page-contact .fact__num{
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.45rem;
  line-height: 1;
  color: var(--amber);
}

.page-contact .fact__txt{
  font-size: .8rem;
  line-height: 1.6;
  color: var(--muted);
}

.page-contact .contact-hero__figure{
  margin: 0;
  position: relative;
}

.page-contact .contact-hero__figure img{
  width: 100%;
  height: 100%;
  aspect-ratio: 16 / 9;
  min-height: 210px;
  object-fit: cover;
  border: var(--hair) solid var(--line);
  filter: saturate(.72) contrast(1.03);
}

/* ---------- 内容区块 ---------- */

.page-contact .contact-section{
  padding: clamp(40px, 6vw, 78px) 0;
  border-bottom: var(--hair) solid var(--line);
}

.page-contact .contact-section__head{
  display: grid;
  gap: 10px;
  max-width: 64ch;
  margin-bottom: clamp(22px, 3.4vw, 38px);
}

.page-contact .contact-section__head h2{
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.55rem, 3.2vw, 2.5rem);
  line-height: 1.16;
  letter-spacing: .01em;
}

.page-contact .contact-section__head p{
  margin: 0;
  color: var(--muted);
  font-size: .95rem;
  line-height: 1.8;
}

/* ---------- 合作方向 ---------- */

.page-contact .directions__list{
  display: flex;
  flex-direction: column;
  border-top: var(--hair) solid var(--line);
}

.page-contact .directions__tab{
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "idx name"
    "idx sub";
  gap: 2px 14px;
  width: 100%;
  padding: 15px 14px;
  text-align: left;
  background: transparent;
  border: 0;
  border-bottom: var(--hair) solid var(--line);
  border-left: 2px solid transparent;
  color: var(--muted);
  font-family: inherit;
  cursor: pointer;
  transition: background var(--fast) var(--ease), color var(--fast) var(--ease), border-color var(--fast) var(--ease);
}

.page-contact .directions__tab:hover{
  background: rgba(232, 234, 228, .04);
  color: var(--paper);
}

.page-contact .directions__tab[aria-selected="true"]{
  background: rgba(53, 196, 106, .09);
  border-left-color: var(--pitch);
  color: var(--paper);
}

.page-contact .directions__idx{
  grid-area: idx;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .78rem;
  color: var(--amber);
}

.page-contact .directions__name{
  grid-area: name;
  font-size: 1.02rem;
  font-weight: 500;
  line-height: 1.4;
}

.page-contact .directions__sub{
  grid-area: sub;
  font-size: .76rem;
  line-height: 1.5;
  color: var(--muted);
}

.page-contact .directions__panel{
  padding: 24px 0 0;
}

.page-contact .directions__panel h3{
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.2rem, 2.4vw, 1.65rem);
  line-height: 1.28;
}

.page-contact .directions__panel p{
  margin: 0 0 14px;
  max-width: 62ch;
  color: var(--pc-body);
  font-size: .95rem;
  line-height: 1.85;
}

.page-contact .directions__panel .dir-panel__label{
  margin: 20px 0 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .directions__panel .directions__more{
  margin: 18px 0 0;
  font-size: .88rem;
  color: var(--muted);
}

.page-contact .dir-panel__list{
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .dir-panel__list li{
  position: relative;
  padding: 10px 0 10px 20px;
  border-bottom: var(--hair) solid var(--line);
  font-size: .92rem;
  line-height: 1.7;
  color: var(--pc-body);
}

.page-contact .dir-panel__list li::before{
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  width: 8px;
  height: 1px;
  background: var(--pitch);
}

/* ---------- 合作流程 ---------- */

.page-contact .flow{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-contact .flow__item{
  position: relative;
  display: grid;
  gap: 6px;
  padding: 16px 0 18px 34px;
  border-bottom: var(--hair) solid var(--line);
}

.page-contact .flow__item::before{
  content: "";
  position: absolute;
  left: 9px;
  top: 30px;
  bottom: -1px;
  width: 1px;
  background: var(--line);
}

.page-contact .flow__item:last-child::before{
  display: none;
}

.page-contact .flow__dot{
  position: absolute;
  left: 4px;
  top: 24px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 4px rgba(242, 178, 51, .14);
}

.page-contact .flow__idx{
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--amber);
}

.page-contact .flow__title{
  margin: 0;
  font-size: 1.02rem;
  font-weight: 500;
  line-height: 1.5;
  color: var(--paper);
}

.page-contact .flow__text{
  margin: 0;
  font-size: .9rem;
  line-height: 1.78;
  color: var(--pc-body-dim);
  max-width: 46ch;
}

/* ---------- 读者反馈 ---------- */

.page-contact .feedback{
  display: grid;
  gap: clamp(22px, 3vw, 38px);
}

.page-contact .feedback__intro h2{
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.5rem, 3vw, 2.3rem);
  line-height: 1.18;
}

.page-contact .feedback__intro p{
  margin: 0 0 14px;
  max-width: 56ch;
  color: var(--pc-body);
  font-size: .95rem;
  line-height: 1.85;
}

.page-contact .feedback__list{
  border: var(--hair) solid var(--line);
  background: var(--charcoal);
  padding: clamp(18px, 2.6vw, 28px);
}

.page-contact .feedback__label{
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .feedback__items{
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: fb;
}

.page-contact .feedback__items li{
  counter-increment: fb;
  position: relative;
  padding: 12px 0 12px 30px;
  border-bottom: var(--hair) solid var(--line);
  font-size: .92rem;
  line-height: 1.7;
  color: var(--pc-body);
}

.page-contact .feedback__items li:last-child{
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .feedback__items li::before{
  content: counter(fb, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 13px;
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--pitch);
}

/* ---------- 联系方式数据块 ---------- */

.page-contact .contact-block{
  display: grid;
  border: var(--hair) solid var(--line);
  background: var(--charcoal);
}

.page-contact .contact-block__data{
  padding: clamp(22px, 3.4vw, 40px);
  display: grid;
  align-content: start;
}

.page-contact .data-row{
  display: grid;
  gap: 7px;
  padding: 18px 0;
  border-bottom: var(--hair) solid var(--line);
}

.page-contact .data-row:first-child{
  padding-top: 0;
}

.page-contact .data-row__key{
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .data-row__value{
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.02rem, 2.4vw, 1.42rem);
  line-height: 1.4;
  color: var(--paper);
  text-decoration: none;
  word-break: break-all;
}

a.page-contact .data-row__value{
  text-decoration: none;
}

.page-contact .data-row__value:hover{
  color: var(--pitch);
}

.page-contact .contact-block__note{
  margin: 20px 0 0;
  max-width: 48ch;
  font-size: .88rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .contact-block__media{
  border-top: var(--hair) solid var(--line);
}

.page-contact .contact-block__media img{
  width: 100%;
  height: 100%;
  min-height: 230px;
  object-fit: cover;
  filter: saturate(.78);
}

/* ---------- 通信地址 ---------- */

.page-contact .address-card{
  background: var(--sheet);
  color: var(--sheet-ink);
  border-left: 2px solid var(--signal);
  padding: clamp(22px, 3.4vw, 42px);
  display: grid;
  gap: 12px;
}

.page-contact .address-card h2{
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.35rem, 2.8vw, 2.1rem);
  line-height: 1.2;
  color: var(--sheet-ink);
}

.page-contact .address-card__line{
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(.92rem, 1.8vw, 1.12rem);
  line-height: 1.8;
  color: var(--sheet-ink);
  word-break: break-all;
}

.page-contact .address-card__note{
  margin: 0;
  max-width: 62ch;
  font-size: .88rem;
  line-height: 1.8;
  color: #4A5550;
}

/* ---------- 常见问题 ---------- */

.page-contact .faq{
  border-top: var(--hair) solid var(--line);
}

.page-contact .faq__item{
  border-bottom: var(--hair) solid var(--line);
}

.page-contact .faq__q{
  position: relative;
  display: block;
  padding: 18px 40px 18px 0;
  cursor: pointer;
  list-style: none;
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.6;
  color: var(--paper);
}

.page-contact .faq__q::-webkit-details-marker{
  display: none;
}

.page-contact .faq__q::after{
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--pitch);
}

.page-contact .faq__item[open] .faq__q::after{
  content: "–";
}

.page-contact .faq__a{
  margin: 0;
  padding: 0 40px 20px 0;
  max-width: 66ch;
  font-size: .92rem;
  line-height: 1.85;
  color: var(--pc-body-dim);
}

/* ---------- 收尾留白 ---------- */

.page-contact .closing{
  padding: clamp(52px, 9vw, 118px) 0 clamp(60px, 10vw, 138px);
}

.page-contact .closing__line{
  margin: 0;
  max-width: 44ch;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.1rem, 2.4vw, 1.6rem);
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px){
  .page-contact .contact-hero__facts{
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .contact-hero__facts li{
    padding: 16px 16px 16px 0;
    border-bottom: 0;
    border-right: var(--hair) solid var(--line);
  }

  .page-contact .contact-hero__facts li:last-child{
    border-right: 0;
    padding-right: 0;
  }

  .page-contact .feedback__items{
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 24px;
  }

  .page-contact .feedback__items li:nth-last-child(2){
    border-bottom: 0;
    padding-bottom: 0;
  }
}

@media (min-width: 900px){
  .page-contact .contact-block{
    grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
  }

  .page-contact .contact-block__media{
    border-top: 0;
    border-left: var(--hair) solid var(--line);
  }

  .page-contact .flow{
    grid-template-columns: repeat(4, minmax(0, 1fr));
    column-gap: clamp(18px, 2.4vw, 34px);
  }

  .page-contact .flow__item{
    padding: 32px 0 0;
    border-bottom: 0;
    border-top: var(--hair) solid var(--line);
    align-content: start;
  }

  .page-contact .flow__item::before{
    display: none;
  }

  .page-contact .flow__dot{
    left: 0;
    top: -6px;
  }

  .page-contact .flow__text{
    max-width: none;
  }
}

@media (min-width: 960px){
  .page-contact .contact-hero__grid{
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: end;
  }

  .page-contact .feedback{
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
    align-items: start;
  }
}

@media (min-width: 1040px){
  .page-contact .directions{
    display: grid;
    grid-template-columns: minmax(0, 302px) minmax(0, 1fr);
    column-gap: clamp(26px, 3.4vw, 52px);
    align-items: start;
  }

  .page-contact .directions__list{
    grid-column: 1;
    grid-row: 1;
  }

  .page-contact .directions__panel{
    grid-column: 2;
    padding: 4px 0 0;
  }
}

@media (prefers-reduced-motion: reduce){
  .page-contact .directions__tab{
    transition: none;
  }
}